Valori delle funzioni trigonometriche per angoli particolari

Primo quadrante

Angolo		Seno	Coseno	Tangente
Gradi	Radianti
$$0°$$	$$0$$	$$0$$	$$1$$	$$0$$
$$30°$$	$$\frac{\pi}{6}$$	$$\frac{1}{2}$$	$$\frac{\sqrt{3}}{2}$$	$$\frac{\sqrt{3}}{3}$$
$$45°$$	$$\frac{\pi}{4}$$	$$\frac{\sqrt{2}}{2}$$	$$\frac{\sqrt{2}}{2}$$	$$1$$
$$60°$$	$$\frac{\pi}{3}$$	$$\frac{\sqrt{3}}{2}$$	$$\frac{1}{2}$$	$$\sqrt{3}$$
$$90°$$	$$\frac{\pi}{2}$$	$$1$$	$$0$$	$$\mbox{ND}$$

Secondo quadrante

Angolo		Seno	Coseno	Tangente
Gradi	Radianti
$$120°$$	$$\frac{2\pi}{3}$$	$$\frac{\sqrt{3}}{2}$$	$$-\frac{1}{2}$$	$$-\sqrt{3}$$
$$135°$$	$$\frac{3\pi}{4}$$	$$\frac{\sqrt{2}}{2}$$	$$-\frac{\sqrt{2}}{2}$$	$$-1$$
$$150°$$	$$\frac{5\pi}{6}$$	$$\frac{1}{2}$$	$$-\frac{\sqrt{3}}{2}$$	$$-\frac{\sqrt{3}}{3}$$
$$180°$$	$$\pi$$	$$0$$	$$-1$$	$$0$$

Terzo quadrante

Angolo		Seno	Coseno	Tangente
Gradi	Radianti
$$210°$$	$$\frac{7\pi}{6}$$	$$-\frac{1}{2}$$	$$-\frac{\sqrt{3}}{2}$$	$$\frac{\sqrt{3}}{3}$$
$$225°$$	$$\frac{5\pi}{4}$$	$$-\frac{\sqrt{2}}{2}$$	$$-\frac{\sqrt{2}}{2}$$	$$1$$
$$240°$$	$$\frac{4\pi}{3}$$	$$-\frac{\sqrt{3}}{2}$$	$$-\frac{1}{2}$$	$$\sqrt{3}$$
$$270°$$	$$\frac{3\pi}{2}$$	$$-1$$	$$0$$	$$\mbox{ND}$$

Quarto quadrante

Angolo		Seno	Coseno	Tangente
Gradi	Radianti
$$300°$$	$$\frac{5\pi}{3}$$	$$-\frac{\sqrt{3}}{2}$$	$$\frac{1}{2}$$	$$-\sqrt{3}$$
$$315°$$	$$\frac{7\pi}{4}$$	$$-\frac{\sqrt{2}}{2}$$	$$\frac{\sqrt{2}}{2}$$	$$-1$$
$$330°$$	$$\frac{11\pi}{6}$$	$$-\frac{1}{2}$$	$$\frac{\sqrt{3}}{2}$$	$$-\frac{\sqrt{3}}{3}$$
$$360°$$	$$2\pi$$	$$0$$	$$1$$	$$0$$